<html>
<head><meta charset="utf-8"><title>weekly meeting 2019-10-31 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html">weekly meeting 2019-10-31 #54818</a></h3>

<hr>

<base href="https://rust-lang.zulipchat.com">

<head><link href="https://rust-lang.github.io/zulip_archive/style.css" rel="stylesheet"></head>

<a name="179512738"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512738" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512738">(Oct 31 2019 at 09:10)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in 4 hours 50 minutes</p>



<a name="179512831"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512831" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512831">(Oct 31 2019 at 09:12)</a>:</h4>
<p>(if you are surprised by the start time, it is because the USA and the EU are out-of-sync with respect to handling of daylight savings time.)</p>



<a name="179512852"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512852" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512852">(Oct 31 2019 at 09:12)</a>:</h4>
<p>also, <span aria-label="pumpkin" class="emoji emoji-1f383" role="img" title="pumpkin">:pumpkin:</span>  Happy Halloween! <span aria-label="pumpkin" class="emoji emoji-1f383" role="img" title="pumpkin">:pumpkin:</span> <span aria-label="ghost" class="emoji emoji-1f47b" role="img" title="ghost">:ghost:</span> <span aria-label="smiling devil" class="emoji emoji-1f608" role="img" title="smiling devil">:smiling_devil:</span></p>



<a name="179512889"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512889" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512889">(Oct 31 2019 at 09:13)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-10-31.20.2354818/near/179512752" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-10-31.20.2354818/near/179512752">pre-triage in a parallel topic</a></p>



<a name="179512956"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512956" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512956">(Oct 31 2019 at 09:14)</a>:</h4>
<p>this weeks WG check-in is from PGO (profile-guided optimization) and Pipelining</p>



<a name="179512974"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179512974" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179512974">(Oct 31 2019 at 09:14)</a>:</h4>
<p><span class="user-mention" data-user-id="124287">@mw</span> , are you around to provide an update for PGO ?</p>



<a name="179513008"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179513008" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179513008">(Oct 31 2019 at 09:15)</a>:</h4>
<p>and for Pipelining, will either of <span class="user-mention" data-user-id="120989">@nnethercote</span> or <span class="user-mention" data-user-id="116015">@Alex Crichton</span>   be around to provide an update on that front?</p>



<a name="179514423"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179514423" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179514423">(Oct 31 2019 at 09:37)</a>:</h4>
<p><span aria-label="exclamation" class="emoji emoji-2757" role="img" title="exclamation">:exclamation:</span> one nominated issue for today is "Some features can no longer be controlled by conditional compilation" <a href="https://github.com/rust-lang/rust/issues/65860" target="_blank" title="https://github.com/rust-lang/rust/issues/65860">#65860</a> ; I recommend all members of <span class="user-group-mention" data-user-group-id="492">@T-compiler</span> review the thread there, because I'm hoping to discuss it today and hopefully document a clearer picture of our policy and values here.</p>



<a name="179516619"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179516619" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179516619">(Oct 31 2019 at 10:06)</a>:</h4>
<p>(and also as part of that topic, we should talk about whether to revert PR  <a href="https://github.com/rust-lang/rust/issues/65742" target="_blank" title="https://github.com/rust-lang/rust/issues/65742">#65742</a> given the problems users have raised.)</p>



<a name="179516650"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179516650" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179516650">(Oct 31 2019 at 10:07)</a>:</h4>
<p>((i do not know how many of those problems would be addressed by instead landing PR <a href="https://github.com/rust-lang/rust/issues/65974" target="_blank" title="https://github.com/rust-lang/rust/issues/65974">#65974</a> though))</p>



<a name="179518861"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179518861" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179518861">(Oct 31 2019 at 10:35)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> yes, I'm around. I need to leave ~10 min early though.</p>



<a name="179529394"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179529394" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179529394">(Oct 31 2019 at 13:11)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I should be around yeah, but there won't be much of an update to give!</p>



<a name="179532730"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179532730" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179532730">(Oct 31 2019 at 13:52)</a>:</h4>
<p>(just a friendly reminder to <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> that the meeting will start in about 8 minutes</p>



<a name="179533581"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533581" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533581">(Oct 31 2019 at 14:02)</a>:</h4>
<p>okay, lets get started <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span></p>



<a name="179533643"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533643" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533643">(Oct 31 2019 at 14:02)</a>:</h4>
<p>first we'll have five minutes for <strong>Announcements</strong></p>



<a name="179533668"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533668" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533668">(Oct 31 2019 at 14:02)</a>:</h4>
<p>I believe the release is a week away</p>



<a name="179533691"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533691" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533691">(Oct 31 2019 at 14:02)</a>:</h4>
<p>which seems noteworthy to me: Not much time left to resolve beta regressions</p>



<a name="179533772"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533772" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533772">(Oct 31 2019 at 14:03)</a>:</h4>
<p>Yes, release is 1 week out. I've not checked in on beta regressions this cycle unfortunately.</p>



<a name="179533872"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533872" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533872">(Oct 31 2019 at 14:04)</a>:</h4>
<p>there's 6 open stable-to-beta tickets</p>



<a name="179533903"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533903" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533903">(Oct 31 2019 at 14:04)</a>:</h4>
<p>maybe we'll take time during the meeting to go over them explicitly</p>



<a name="179533960"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179533960" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179533960">(Oct 31 2019 at 14:05)</a>:</h4>
<p>(heh, just added another one)</p>



<a name="179534121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534121">(Oct 31 2019 at 14:07)</a>:</h4>
<p>okay then, lets get started</p>



<a name="179534181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534181">(Oct 31 2019 at 14:07)</a>:</h4>
<p>as a general note, T-compiler has 34 open <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+">P-high bugs</a>, 17 of which are <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">unassigned</a></p>



<a name="179534236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534236">(Oct 31 2019 at 14:08)</a>:</h4>
<p>so if you're looking for something to do, browse over the latter list</p>



<a name="179534273"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534273" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534273">(Oct 31 2019 at 14:08)</a>:</h4>
<p>having said that, I didn't have a chance today to formally walk over all the P-high issues. I'll do that after the meeting instead</p>



<a name="179534299"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534299" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534299">(Oct 31 2019 at 14:09)</a>:</h4>
<p>So, next up: beta-nominations</p>



<a name="179534318"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534318" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534318">(Oct 31 2019 at 14:09)</a>:</h4>
<p>There is one beta nomination PR: "save-analysis: Account for async desugaring in async fn return types" <a href="https://github.com/rust-lang/rust/issues/65936" target="_blank" title="https://github.com/rust-lang/rust/issues/65936">#65936</a></p>



<a name="179534389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534389">(Oct 31 2019 at 14:10)</a>:</h4>
<p>this fixes <a href="https://github.com/rust-lang/rust/issues/65590" target="_blank" title="https://github.com/rust-lang/rust/issues/65590">#65590</a></p>



<a name="179534439"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534439" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534439">(Oct 31 2019 at 14:10)</a>:</h4>
<p>which ... from my reading, <em>is</em> a stable-to-beta regression. Does that sounds correct?</p>



<a name="179534468"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534468" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534468">(Oct 31 2019 at 14:11)</a>:</h4>
<p>I believe so</p>



<a name="179534470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534470">(Oct 31 2019 at 14:11)</a>:</h4>
<p>I'm going to assume that it is and tag it as such</p>



<a name="179534474"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534474" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534474">(Oct 31 2019 at 14:11)</a>:</h4>
<p>although</p>



<a name="179534492"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534492" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534492">(Oct 31 2019 at 14:11)</a>:</h4>
<p>well not really</p>



<a name="179534500"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534500" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534500">(Oct 31 2019 at 14:11)</a>:</h4>
<p>because async is not on stable?</p>



<a name="179534505"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534505" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534505">(Oct 31 2019 at 14:11)</a>:</h4>
<p>oh</p>



<a name="179534509"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534509" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534509">(Oct 31 2019 at 14:11)</a>:</h4>
<p>it's a fix to the feature that <em>will</em> become stable</p>



<a name="179534518"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534518" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534518">(Oct 31 2019 at 14:11)</a>:</h4>
<p>hmm</p>



<a name="179534521"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534521" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534521">(Oct 31 2019 at 14:11)</a>:</h4>
<p>yes yes</p>



<a name="179534576"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534576" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534576">(Oct 31 2019 at 14:12)</a>:</h4>
<p>okay. interesting corner case in our labelling system</p>



<a name="179534593"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534593" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534593">(Oct 31 2019 at 14:12)</a>:</h4>
<p>since thats the sort of case that should <em>absolutely</em> qualify for beta backport, I thiink...</p>



<a name="179534603"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534603" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534603">(Oct 31 2019 at 14:12)</a>:</h4>
<p>(right? well ... maybe ...)</p>



<a name="179534615"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534615" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534615">(Oct 31 2019 at 14:12)</a>:</h4>
<p>I think it should, but it is not a regression in the technical sense :)</p>



<a name="179534624"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534624" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534624">(Oct 31 2019 at 14:12)</a>:</h4>
<p>right</p>



<a name="179534644"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534644" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534644">(Oct 31 2019 at 14:13)</a>:</h4>
<p>/me muses on a Pending-Feature label (or About-To-Be-Stabilzed)</p>



<a name="179534664"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534664" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534664">(Oct 31 2019 at 14:13)</a>:</h4>
<p>I guess you can view it as a regression from the general state of "IDE worked for stable rust code w/o ICEs" :)</p>



<a name="179534698"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534698" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534698">(Oct 31 2019 at 14:13)</a>:</h4>
<p>there is that</p>



<a name="179534724"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534724" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534724">(Oct 31 2019 at 14:13)</a>:</h4>
<p>anyway, sounds good. Approved for backport</p>



<a name="179534818"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534818" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534818">(Oct 31 2019 at 14:14)</a>:</h4>
<p>There are no stable nominations, thank goodness</p>



<a name="179534844"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534844" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534844">(Oct 31 2019 at 14:15)</a>:</h4>
<p>so, lets now walk through the stable-to-beta regressions themselves</p>



<a name="179534861"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534861" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534861">(Oct 31 2019 at 14:15)</a>:</h4>
<p>there are 7 of them: <a href="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta" target="_blank" title="https://github.com/rust-lang/rust/labels/regression-from-stable-to-beta">stable-to-beta regressions</a></p>



<a name="179534882"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534882" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534882">(Oct 31 2019 at 14:15)</a>:</h4>
<p>beta regr 1/7: "ptr types not default" <a href="https://github.com/rust-lang/rust/issues/65525" target="_blank" title="https://github.com/rust-lang/rust/issues/65525">#65525</a></p>



<a name="179534965"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179534965" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179534965">(Oct 31 2019 at 14:16)</a>:</h4>
<blockquote>
<p>Likely due to <a href="https://github.com/rust-lang/rust/issues/64710" target="_blank" title="https://github.com/rust-lang/rust/issues/64710">#64710</a> exposing bindgen bug <a href="https://github.com/rust-lang/rust-bindgen/issues/1627" target="_blank" title="https://github.com/rust-lang/rust-bindgen/issues/1627">rust-lang/rust-bindgen#1627</a>. Updating bindgen fixes the issue.</p>
</blockquote>



<a name="179535013"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535013" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535013">(Oct 31 2019 at 14:16)</a>:</h4>
<p>(woah, do arbitrary <a href="https://github.com/rust-lang/xxx/issues/123" target="_blank" title="https://github.com/rust-lang/xxx/issues/123">rust-lang/xxx#123</a> links work?)</p>



<a name="179535015"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535015" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535015">(Oct 31 2019 at 14:16)</a>:</h4>
<p>okay then. weird.</p>



<a name="179535033"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535033" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535033">(Oct 31 2019 at 14:16)</a>:</h4>
<p>(I guess zulip improved their linkifiers)</p>



<a name="179535039"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535039" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535039">(Oct 31 2019 at 14:16)</a>:</h4>
<p>seems like we should close</p>



<a name="179535102"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535102" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535102">(Oct 31 2019 at 14:17)</a>:</h4>
<p>okay</p>



<a name="179535104"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535104" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535104">(Oct 31 2019 at 14:17)</a>:</h4>
<p>yeah, it's a bug in bindgen, not much the compiler can do, right?</p>



<a name="179535142"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535142" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535142">(Oct 31 2019 at 14:18)</a>:</h4>
<p>(anyway, it's due to a libs change)</p>



<a name="179535202"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535202" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535202">(Oct 31 2019 at 14:18)</a>:</h4>
<p>closed</p>



<a name="179535218"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535218" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535218">(Oct 31 2019 at 14:18)</a>:</h4>
<p>wow, two levels of "not our problem" :P</p>



<a name="179535225"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535225" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535225">(Oct 31 2019 at 14:18)</a>:</h4>
<p>beta regr 2/7: "non-empty glob statement regression 1.39" <a href="https://github.com/rust-lang/rust/issues/65523" target="_blank" title="https://github.com/rust-lang/rust/issues/65523">#65523</a></p>



<a name="179535254"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535254" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535254">(Oct 31 2019 at 14:18)</a>:</h4>
<p>was this fixed by <a href="https://github.com/rust-lang/rust/issues/65539" target="_blank" title="https://github.com/rust-lang/rust/issues/65539">#65539</a> ?</p>



<a name="179535280"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535280" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535280">(Oct 31 2019 at 14:19)</a>:</h4>
<p>it looks like it became a warning</p>



<a name="179535291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535291">(Oct 31 2019 at 14:19)</a>:</h4>
<p>(ah, <em>this</em> is why -- in the lang team meeting when we discussed <a href="https://github.com/rust-lang/rust/issues/62334" target="_blank" title="https://github.com/rust-lang/rust/issues/62334">#62334</a> -- I thought that there was a regression involved)</p>



<a name="179535293"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535293" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535293">(Oct 31 2019 at 14:19)</a>:</h4>
<p>can I ask someone to identify a mcve for this bug and double-check that its fixed ?</p>



<a name="179535381"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535381" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535381">(Oct 31 2019 at 14:20)</a>:</h4>
<p>(it seems very very likely that it is)</p>



<a name="179535390"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535390" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535390">(Oct 31 2019 at 14:20)</a>:</h4>
<blockquote>
<p>it looks like it became a warning</p>
</blockquote>
<p>(my reasoning here is that the message in the crater log is quite specific, and that error became a warning)</p>



<a name="179535420"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535420" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535420">(Oct 31 2019 at 14:20)</a>:</h4>
<p>(it might be as simple as just downloading the relevant crate and making sure it builds now with just a warning instead of an error)</p>



<a name="179535448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535448">(Oct 31 2019 at 14:20)</a>:</h4>
<p>anyway it seems very likely to have been fixed</p>



<a name="179535453"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535453" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535453">(Oct 31 2019 at 14:20)</a>:</h4>
<p>so lets move along</p>



<a name="179535489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535489">(Oct 31 2019 at 14:21)</a>:</h4>
<p>beta regr 3/7: "array impls &lt;= 32 1.39 regression" <a href="https://github.com/rust-lang/rust/issues/65522" target="_blank" title="https://github.com/rust-lang/rust/issues/65522">#65522</a></p>



<a name="179535528"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535528" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535528">(Oct 31 2019 at 14:21)</a>:</h4>
<p>believed to be another <code>bindgen</code> bug ... ?</p>



<a name="179535535"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535535" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535535">(Oct 31 2019 at 14:21)</a>:</h4>
<p>I think so</p>



<a name="179535551"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535551" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535551">(Oct 31 2019 at 14:21)</a>:</h4>
<p>do we need a backport of the fix for <a href="https://github.com/rust-lang/rust/issues/65523" target="_blank" title="https://github.com/rust-lang/rust/issues/65523">#65523</a>?</p>



<a name="179535562"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535562" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535562">(Oct 31 2019 at 14:21)</a>:</h4>
<p>looks like maybe the <em>same</em> bug, no?</p>



<a name="179535624"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535624" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535624">(Oct 31 2019 at 14:22)</a>:</h4>
<blockquote>
<p>do we need a backport of the fix for <a href="https://github.com/rust-lang/rust/issues/65523" target="_blank" title="https://github.com/rust-lang/rust/issues/65523">#65523</a>?</p>
</blockquote>
<p>uh, good point, yes</p>



<a name="179535637"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535637" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535637">(Oct 31 2019 at 14:22)</a>:</h4>
<p>lets beta nom that</p>



<a name="179535666"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535666" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535666">(Oct 31 2019 at 14:23)</a>:</h4>
<p>beta-nom 2/1: "resolve: Turn the "non-empty glob must import something" error into a lint" <a href="https://github.com/rust-lang/rust/issues/65539" target="_blank" title="https://github.com/rust-lang/rust/issues/65539">#65539</a></p>



<a name="179535806"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535806" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535806">(Oct 31 2019 at 14:24)</a>:</h4>
<p>okay accepted for backport</p>



<a name="179535889"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535889" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535889">(Oct 31 2019 at 14:25)</a>:</h4>
<p>coming back to beta regr 3/7: "array impls &lt;= 32 1.39 regression" <a href="https://github.com/rust-lang/rust/issues/65522" target="_blank" title="https://github.com/rust-lang/rust/issues/65522">#65522</a></p>



<a name="179535913"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535913" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535913">(Oct 31 2019 at 14:25)</a>:</h4>
<p>should we attempt to verify the claim that updating <code>bindgen</code> fixes these cases?</p>



<a name="179535922"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535922" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535922">(Oct 31 2019 at 14:25)</a>:</h4>
<p>or just cross our fingers?</p>



<a name="179535993"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535993" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535993">(Oct 31 2019 at 14:26)</a>:</h4>
<p>I think we should survey the others</p>



<a name="179535996"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179535996" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179535996">(Oct 31 2019 at 14:26)</a>:</h4>
<p>I'll assign myself to attempt to verify</p>



<a name="179536006"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536006" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536006">(Oct 31 2019 at 14:26)</a>:</h4>
<p>but maybe we can indeed make a test</p>



<a name="179536047"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536047" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536047">(Oct 31 2019 at 14:27)</a>:</h4>
<p>beta-regr 4/7: "bindgen changes in 1.39" <a href="https://github.com/rust-lang/rust/issues/65520" target="_blank" title="https://github.com/rust-lang/rust/issues/65520">#65520</a></p>



<a name="179536056"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536056" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536056">(Oct 31 2019 at 14:27)</a>:</h4>
<p>heh</p>



<a name="179536070"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536070" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536070">(Oct 31 2019 at 14:27)</a>:</h4>
<p>great, that's already assigned to me</p>



<a name="179536079"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536079" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536079">(Oct 31 2019 at 14:27)</a>:</h4>
<p>(4 hour ago)</p>



<a name="179536096"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536096" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536096">(Oct 31 2019 at 14:27)</a>:</h4>
<p>so I guess I kn ow what I'll be doing instead of traversing the P-high issues after this meeting</p>



<a name="179536156"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536156" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536156">(Oct 31 2019 at 14:28)</a>:</h4>
<p>beta-regr 5/7: "Star Import Precedence Regression in Beta" <a href="https://github.com/rust-lang/rust/issues/65090" target="_blank" title="https://github.com/rust-lang/rust/issues/65090">#65090</a></p>



<a name="179536160"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536160" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536160">(Oct 31 2019 at 14:28)</a>:</h4>
<p>I'm going to try and do those verifications live while we type :)</p>



<a name="179536221"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536221" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536221">(Oct 31 2019 at 14:28)</a>:</h4>
<p>I'm going to close <a href="https://github.com/rust-lang/rust/issues/65090" target="_blank" title="https://github.com/rust-lang/rust/issues/65090">#65090</a> based on points raised in comments over last three weeks</p>



<a name="179536363"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536363" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536363">(Oct 31 2019 at 14:30)</a>:</h4>
<p>beta-regr 6/7: "linking of libtest failed" <a href="https://github.com/rust-lang/rust/issues/64872" target="_blank" title="https://github.com/rust-lang/rust/issues/64872">#64872</a></p>



<a name="179536398"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536398" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536398">(Oct 31 2019 at 14:30)</a>:</h4>
<p>I've been working on this. I had a PR that fixed it, but <span class="user-mention" data-user-id="116015">@Alex Crichton</span> was rightly concerned about the impact my PR would have elsewhere</p>



<a name="179536448"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536448" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536448">(Oct 31 2019 at 14:31)</a>:</h4>
<p>At this point I am in agreement with <span class="user-mention" data-user-id="116015">@Alex Crichton</span> that the right thing (at least for the short term) is to fix this by reverting the change to the symbol export logic</p>



<a name="179536455"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536455" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536455">(Oct 31 2019 at 14:31)</a>:</h4>
<p>and so I am working on making a PR for that.</p>



<a name="179536489"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536489" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536489">(Oct 31 2019 at 14:32)</a>:</h4>
<p>(I'll probably work on that in parallel with the testing stuff after the meeting is over)</p>



<a name="179536565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536565">(Oct 31 2019 at 14:32)</a>:</h4>
<p>But in any case, I'll need to put the PR up soon since it will need to be beta backported. I might steal a  minute in tomorrows design meeting to get that approved.</p>



<a name="179536614"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536614" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536614">(Oct 31 2019 at 14:33)</a>:</h4>
<p>beta-regr 7/7: "Undefined symbol _fltused when compiling to x86_64-unknown-uefi" <a href="https://github.com/rust-lang/rust/issues/62785" target="_blank" title="https://github.com/rust-lang/rust/issues/62785">#62785</a></p>



<a name="179536642"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536642" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536642">(Oct 31 2019 at 14:33)</a>:</h4>
<p>hasn't <span class="user-mention" data-user-id="124288">@oli</span> been trying to land a fix for this for a month?</p>



<a name="179536702"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536702" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536702">(Oct 31 2019 at 14:34)</a>:</h4>
<p>/me starts following the chain of PR's</p>



<a name="179536723"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536723" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536723">(Oct 31 2019 at 14:34)</a>:</h4>
<p>I'm a bit surprised this is p-high</p>



<a name="179536736"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536736" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536736">(Oct 31 2019 at 14:34)</a>:</h4>
<p>sounds like a tier 3 platform</p>



<a name="179536745"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536745" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536745">(Oct 31 2019 at 14:34)</a>:</h4>
<p>PR <a href="https://github.com/rust-lang/compiler-builtins/issues/317" target="_blank" title="https://github.com/rust-lang/compiler-builtins/issues/317">rust-lang/compiler-builtins#317</a> is still open</p>



<a name="179536837"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536837" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536837">(Oct 31 2019 at 14:35)</a>:</h4>
<p>at this point it seems very unlikely that this is going to get resolved before the beta-&gt;stable promotion</p>



<a name="179536925"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536925" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536925">(Oct 31 2019 at 14:36)</a>:</h4>
<p>but also: should we reassign this? Is <span class="user-mention" data-user-id="124288">@oli</span> generally around right now?</p>



<a name="179536938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536938">(Oct 31 2019 at 14:36)</a>:</h4>
<p>(The prioritization is another question too, but maybe we can revisit that next week)</p>



<a name="179536945"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536945" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536945">(Oct 31 2019 at 14:36)</a>:</h4>
<p>not sure</p>



<a name="179536971"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536971" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536971">(Oct 31 2019 at 14:37)</a>:</h4>
<p>did <span class="user-mention" data-user-id="124288">@oli</span> mention being on vacation?</p>



<a name="179536977"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536977" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536977">(Oct 31 2019 at 14:37)</a>:</h4>
<p>until next week, yes</p>



<a name="179536981"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536981" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536981">(Oct 31 2019 at 14:37)</a>:</h4>
<p>well anyway that is all the beta regressions. It seems like we should not prioritize effort on resolving issue <a href="https://github.com/rust-lang/rust/issues/62785" target="_blank" title="https://github.com/rust-lang/rust/issues/62785">#62785</a></p>



<a name="179536984"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179536984" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179536984">(Oct 31 2019 at 14:37)</a>:</h4>
<p><a href="#narrow/stream/131828-t-compiler/topic/vacation" title="#narrow/stream/131828-t-compiler/topic/vacation">https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/vacation</a></p>



<a name="179537091"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537091" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537091">(Oct 31 2019 at 14:38)</a>:</h4>
<p>next, lets do I-nominated stuff. (There are two things marked S-waiting-on-team, but the only one we might need to look at is also I-nominated)</p>



<a name="179537163"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537163" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537163">(Oct 31 2019 at 14:39)</a>:</h4>
<p>there are 5 <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=state%3Aopen+label%3AI-nominated+label%3AT-compiler+" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=state%3Aopen+label%3AI-nominated+label%3AT-compiler+">nominated issues and PRs</a></p>



<a name="179537178"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537178" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537178">(Oct 31 2019 at 14:40)</a>:</h4>
<p>I'm going to go out of order though</p>



<a name="179537226"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537226" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537226">(Oct 31 2019 at 14:40)</a>:</h4>
<p>to try to get the quick things out of the way first</p>



<a name="179537244"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537244" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537244">(Oct 31 2019 at 14:40)</a>:</h4>
<p>I-nominated: "Reduce the places where <code>stable</code> annotations are needed" <a href="https://github.com/rust-lang/rust/issues/65515" target="_blank" title="https://github.com/rust-lang/rust/issues/65515">#65515</a></p>



<a name="179537263"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537263" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537263">(Oct 31 2019 at 14:40)</a>:</h4>
<p>I want the team to come to consensus on whether to do this or not</p>



<a name="179537300"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537300" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537300">(Oct 31 2019 at 14:41)</a>:</h4>
<p>I saw what I would call light pushback from <span class="user-mention" data-user-id="126931">@centril</span> (perhaps one might even have deemed it devil's advocatry)</p>



<a name="179537314"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537314" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> mw <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537314">(Oct 31 2019 at 14:41)</a>:</h4>
<p>/me needs to run. <span class="user-mention" data-user-id="116083">@pnkfelix</span> has my updates on WG-profile-guided-optimization...</p>



<a name="179537327"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537327" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537327">(Oct 31 2019 at 14:41)</a>:</h4>
<p>thanks <span class="user-mention" data-user-id="124287">@mw</span></p>



<a name="179537389"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537389" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537389">(Oct 31 2019 at 14:42)</a>:</h4>
<blockquote>
<p>I want the team to come to consensus on whether to do this or not</p>
</blockquote>
<p>what is the specific proposal -- just enum variants?</p>



<a name="179537462"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537462" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537462">(Oct 31 2019 at 14:42)</a>:</h4>
<p>bascially: Does anyone here <em>object</em> to the proposal here, at least when reestricted to enum variants?</p>



<a name="179537485"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537485" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537485">(Oct 31 2019 at 14:42)</a>:</h4>
<p>I think my opinion is we should do it</p>



<a name="179537504"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537504" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537504">(Oct 31 2019 at 14:43)</a>:</h4>
<p>but I'm still curious if there are surprising edge cases</p>



<a name="179537519"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537519" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537519">(Oct 31 2019 at 14:43)</a>:</h4>
<blockquote>
<blockquote>
<p>I want the team to come to consensus on whether to do this or not</p>
</blockquote>
<p>what is the specific proposal -- just enum variants?</p>
</blockquote>
<p>indeed, the somewhat open-ended nature of the proposal's phrasing is maybe cause for concern</p>



<a name="179537520"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537520" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537520">(Oct 31 2019 at 14:43)</a>:</h4>
<p>it seems more like a libs concern to me in some sense</p>



<a name="179537528"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537528" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537528">(Oct 31 2019 at 14:43)</a>:</h4>
<p>or at least I'd expect feedback <em>from</em> libs team about this</p>



<a name="179537544"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537544" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537544">(Oct 31 2019 at 14:43)</a>:</h4>
<p>good point</p>



<a name="179537557"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537557" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537557">(Oct 31 2019 at 14:43)</a>:</h4>
<p>like "ah but back when we added FOO BAR, that would have caused a problem"</p>



<a name="179537593"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537593" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537593">(Oct 31 2019 at 14:44)</a>:</h4>
<p>okay. so maybe what we do is: State that at this meeting, no one present from T-compiler objected to doing this for enums</p>



<a name="179537658"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537658" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537658">(Oct 31 2019 at 14:44)</a>:</h4>
<p>but that we are adding T-libs because we think this is in their balliwick</p>



<a name="179537661"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537661" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537661">(Oct 31 2019 at 14:44)</a>:</h4>
<p>sound good?</p>



<a name="179537701"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537701" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537701">(Oct 31 2019 at 14:44)</a>:</h4>
<p>next nomination: "Document query modifiers" <a href="https://github.com/rust-lang/rust/issues/65929" target="_blank" title="https://github.com/rust-lang/rust/issues/65929">#65929</a></p>



<a name="179537708"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537708" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537708">(Oct 31 2019 at 14:44)</a>:</h4>
<p>yep. I left a personal comment in that direction</p>



<a name="179537733"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537733" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537733">(Oct 31 2019 at 14:45)</a>:</h4>
<p>okay, <span class="user-mention" data-user-id="119009">@eddyb</span> actually gave feedback here (on <a href="https://github.com/rust-lang/rust/issues/65929" target="_blank" title="https://github.com/rust-lang/rust/issues/65929">#65929</a>)</p>



<a name="179537757"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537757" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537757">(Oct 31 2019 at 14:45)</a>:</h4>
<p>that they want to see the code/API cleaned up before we work too hard on documentation</p>



<a name="179537767"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537767" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537767">(Oct 31 2019 at 14:45)</a>:</h4>
<p>that's all I wanted to hear, at least for now</p>



<a name="179537874"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537874" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537874">(Oct 31 2019 at 14:46)</a>:</h4>
<p>next nomination: "Allow foreign exceptions to unwind through Rust code and Rust panics to unwind through FFI" <a href="https://github.com/rust-lang/rust/issues/65646" target="_blank" title="https://github.com/rust-lang/rust/issues/65646">#65646</a></p>



<a name="179537897"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537897" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537897">(Oct 31 2019 at 14:47)</a>:</h4>
<p>(I don't actually  know what the action is here for the nomination )</p>



<a name="179537914"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537914" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537914">(Oct 31 2019 at 14:47)</a>:</h4>
<p>((i think maybe <span class="user-mention" data-user-id="126931">@centril</span> just wanted to draw attention to the PR, which is fine, but also does not need to take synchronous time now ))</p>



<a name="179537919"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537919" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537919">(Oct 31 2019 at 14:47)</a>:</h4>
<p>I think it can probably be removed</p>



<a name="179537940"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537940" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537940">(Oct 31 2019 at 14:47)</a>:</h4>
<p>I was hoping to review that yesterday but didn't get to it</p>



<a name="179537959"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179537959" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179537959">(Oct 31 2019 at 14:47)</a>:</h4>
<p>(sorry <span class="user-mention" data-user-id="143274">@Amanieu</span>)</p>



<a name="179538014"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538014" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538014">(Oct 31 2019 at 14:48)</a>:</h4>
<p>/me wonders if we need separate labels for  nominations for synchronous discussion versus nominations for general attention ...</p>



<a name="179538051"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538051" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538051">(Oct 31 2019 at 14:48)</a>:</h4>
<p>anyway ....</p>



<a name="179538096"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538096" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538096">(Oct 31 2019 at 14:48)</a>:</h4>
<p>next nomination: "PowerPC C ABI fixes" <a href="https://github.com/rust-lang/rust/issues/64259" target="_blank" title="https://github.com/rust-lang/rust/issues/64259">#64259</a></p>



<a name="179538143"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538143" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538143">(Oct 31 2019 at 14:49)</a>:</h4>
<p>eddyb nominated this for team discussion, <a href="https://github.com/rust-lang/rust/pull/64259#issuecomment-547366517" target="_blank" title="https://github.com/rust-lang/rust/pull/64259#issuecomment-547366517">here</a></p>



<a name="179538191"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538191" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538191">(Oct 31 2019 at 14:50)</a>:</h4>
<p>does this need a <del>design</del> steering meeting?</p>



<a name="179538289"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538289" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538289">(Oct 31 2019 at 14:50)</a>:</h4>
<p>I'm not prepared to make an off the cuff decision about it. Certainly not in the short time we have left in today's meeting</p>



<a name="179538338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538338">(Oct 31 2019 at 14:51)</a>:</h4>
<p>so lets leave it nominated but not attempt to discuss it now, especially since <span class="user-mention" data-user-id="124287">@mw</span> has gone and I havent' seen sign of <span class="user-mention" data-user-id="119009">@eddyb</span> (perhaps due to the time zone disconnect for this week)</p>



<a name="179538373"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538373" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538373">(Oct 31 2019 at 14:51)</a>:</h4>
<p>last nomination: "Some features can no longer be controlled by conditional compilation" <a href="https://github.com/rust-lang/rust/issues/65860" target="_blank" title="https://github.com/rust-lang/rust/issues/65860">#65860</a></p>



<a name="179538443"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538443" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538443">(Oct 31 2019 at 14:52)</a>:</h4>
<p>do we need to consider backing out PR <a href="https://github.com/rust-lang/rust/issues/65742" target="_blank" title="https://github.com/rust-lang/rust/issues/65742">#65742</a> ?</p>



<a name="179538450"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538450" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538450">(Oct 31 2019 at 14:52)</a>:</h4>
<blockquote>
<p>I'm not prepared to make an off the cuff decision about it. Certainly not in the short time we have left in today's meeting</p>
</blockquote>
<p>(i'm skimming but definitely this is a bit complex -- still, we should unblock it..)</p>



<a name="179538462"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538462" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538462">(Oct 31 2019 at 14:52)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> o/ (without pings it's hard to keep track of what's up on Zulip)</p>



<a name="179538475"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538475" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538475">(Oct 31 2019 at 14:52)</a>:</h4>
<p>PR <a href="https://github.com/rust-lang/rust/issues/65742" target="_blank" title="https://github.com/rust-lang/rust/issues/65742">#65742</a> only landed 8 days ago.</p>



<a name="179538476"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538476" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538476">(Oct 31 2019 at 14:52)</a>:</h4>
<p>I've been trying to keep up though</p>



<a name="179538488"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538488" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538488">(Oct 31 2019 at 14:52)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> you don't get pinged by <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span>  ??</p>



<a name="179538555"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538555" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538555">(Oct 31 2019 at 14:53)</a>:</h4>
<p>sorry I forget to press the emoji... Zulip should add "who has read this" indicators, even if opt-in</p>



<a name="179538561"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538561" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538561">(Oct 31 2019 at 14:53)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> (we'll debug the pinging situation later. If I need to ping every member of <span class="user-group-mention" data-user-group-id="492">@T-compiler</span>  to get a quorum, I will happily do so.)</p>



<a name="179538662"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538662" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538662">(Oct 31 2019 at 14:54)</a>:</h4>
<p>I just mean that most of the stuff in the meeting doesn't need me so I can miss individual items unless I'm pinged on them specifically</p>



<a name="179538665"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538665" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538665">(Oct 31 2019 at 14:54)</a>:</h4>
<p>anyway, regarding issue <a href="https://github.com/rust-lang/rust/issues/65860" target="_blank" title="https://github.com/rust-lang/rust/issues/65860">#65860</a>, I do think it would be good for us for decide whether or not we will back out PR <a href="https://github.com/rust-lang/rust/issues/65742" target="_blank" title="https://github.com/rust-lang/rust/issues/65742">#65742</a> <strong>before</strong> nightly gets promoted to beta</p>



<a name="179538698"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538698" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538698">(Oct 31 2019 at 14:54)</a>:</h4>
<p>yeah</p>



<a name="179538707"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538707" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538707">(Oct 31 2019 at 14:54)</a>:</h4>
<p>cc <span class="user-mention" data-user-id="126931">@centril</span> <span class="user-mention" data-user-id="116122">@simulacrum</span></p>



<a name="179538710"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538710" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538710">(Oct 31 2019 at 14:54)</a>:</h4>
<blockquote>
<p>I just mean that most of the stuff in the meeting doesn't need me so I can miss individual items unless I'm pinged on them specifically</p>
</blockquote>
<p>... (I think this is missing part of the point of the synchronous meeting...)</p>



<a name="179538769"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538769" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538769">(Oct 31 2019 at 14:55)</a>:</h4>
<p>... (as in, I know meetings are boring and there are seemingly-higher priority items. But what's the point of trying to schedule them if people aren't going to bother participating?)</p>



<a name="179538800"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538800" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538800">(Oct 31 2019 at 14:55)</a>:</h4>
<p>anyway sorry I don't want to get sidetracked</p>



<a name="179538807"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538807" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538807">(Oct 31 2019 at 14:56)</a>:</h4>
<p>We haven't had the WG checkins yet</p>



<a name="179538810"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538810" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538810">(Oct 31 2019 at 14:56)</a>:</h4>
<p>not sure how much background is worth going into here. This has to do with a change to feature gate syntax like <code>box 22</code>, even if that occurs in a <code>#[cfg]</code> syntax. This affects "stable" code that used such features conditionally -- the correct way to do so after this PR is to put them in a separate file and use a <code>#[cfg(foo)] mod m;</code> statement</p>



<a name="179538830"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538830" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538830">(Oct 31 2019 at 14:56)</a>:</h4>
<p>I think it would be wrong to not back it out</p>



<a name="179538870"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538870" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538870">(Oct 31 2019 at 14:56)</a>:</h4>
<p>but the question at hand is only partly about the specifics</p>



<a name="179538898"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538898" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538898">(Oct 31 2019 at 14:56)</a>:</h4>
<p>i.e. we clearly have ongoing debate</p>



<a name="179538930"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538930" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538930">(Oct 31 2019 at 14:56)</a>:</h4>
<p>right. there is a matter of our overall policy and values when it comes to these bugs</p>



<a name="179538986"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538986" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538986">(Oct 31 2019 at 14:57)</a>:</h4>
<p>and in the past I think we have treated crater like any other test: It is a way to expose bugs, but it doesn't prove there won't be a significant impact from a change</p>



<a name="179538993"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179538993" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179538993">(Oct 31 2019 at 14:57)</a>:</h4>
<p>and it <em>is</em> a regression for code, even if not necessarily an unexpected one (I am still unclear on this point)</p>



<a name="179539054"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539054" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539054">(Oct 31 2019 at 14:58)</a>:</h4>
<p>I think it was expected (by the PR author(s)), and I think some sort of change like this is necessary, but I don't think it was necessarily broadly discussed</p>



<a name="179539055"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539055" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539055">(Oct 31 2019 at 14:58)</a>:</h4>
<p>anyway unfortunately i have not allocated the appropriate amount of time in this meeting to have this discussion. <span aria-label="sad" class="emoji emoji-2639" role="img" title="sad">:sad:</span></p>



<a name="179539153"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539153" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539153">(Oct 31 2019 at 14:58)</a>:</h4>
<p>let me at least copy-and-paste the WG-pgo update from <span class="user-mention" data-user-id="124287">@mw</span></p>



<a name="179539176"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539176" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539176">(Oct 31 2019 at 14:58)</a>:</h4>
<p>here's the update for the PGO working group:</p>
<blockquote>
<ul>
<li>PGO is available in the stable compiler. Docs are in the <a href="https://rust-lang.github.io/rustc-guide/profile-guided-optimization.html" target="_blank" title="https://rust-lang.github.io/rustc-guide/profile-guided-optimization.html">rustc-guide</a> and the <a href="https://doc.rust-lang.org/rustc/profile-guided-optimization.html" target="_blank" title="https://doc.rust-lang.org/rustc/profile-guided-optimization.html">rustc-book</a></li>
<li>Unfortunately we don't observe significant performance gains from applying it (except for tiny synthetic test cases).</li>
<li>I asked for people to try PGO on <a href="https://internals.rust-lang.org/t/profile-guided-optimization-how-well-does-it-work-for-you/11108" target="_blank" title="https://internals.rust-lang.org/t/profile-guided-optimization-how-well-does-it-work-for-you/11108">irlo</a> but haven't gotten a lot of feedback.<ul>
<li>There is one interesting theory that Rust doesn't profit as much as C++ because it defaults to having fewer  compilation units and thus can make better inlining decisions in the non-PGO case. </li>
</ul>
</li>
<li>I'll probably wind down the working group, as I don't have time to pursue further and there are no actual known issues in the implementation.</li>
</ul>
</blockquote>



<a name="179539211"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539211" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539211">(Oct 31 2019 at 14:59)</a>:</h4>
<p><span aria-label="tada" class="emoji emoji-1f389" role="img" title="tada">:tada:</span> for getting it done :)</p>



<a name="179539247"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539247" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539247">(Oct 31 2019 at 14:59)</a>:</h4>
<p>if you have questions about this, you should ping <span class="user-mention" data-user-id="124287">@mw</span> (who, as previously noted, had to run)</p>



<a name="179539371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539371">(Oct 31 2019 at 15:00)</a>:</h4>
<p>Separately, <span class="user-mention" data-user-id="116015">@Alex Crichton</span> had mentioned up above that there might not be much to report from WG-pipelining</p>



<a name="179539387"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539387" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539387">(Oct 31 2019 at 15:00)</a>:</h4>
<p>seems like WG-PGO and WG-pipelining are maybe just "done", no?</p>



<a name="179539391"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539391" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539391">(Oct 31 2019 at 15:00)</a>:</h4>
<p>maybe</p>



<a name="179539399"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539399" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539399">(Oct 31 2019 at 15:00)</a>:</h4>
<p>might be good to close them down</p>



<a name="179539408"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539408" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539408">(Oct 31 2019 at 15:00)</a>:</h4>
<p>I'm going to open a PR against compiler-team repo to remove them, I think</p>



<a name="179539436"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539436" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539436">(Oct 31 2019 at 15:00)</a>:</h4>
<blockquote>
<p>anyway unfortunately i have not allocated the appropriate amount of time in this meeting to have this discussion. <span aria-label="sad" class="emoji emoji-2639" role="img" title="sad">:sad:</span></p>
</blockquote>
<p>how/where should we have that conversation?</p>



<a name="179539473"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539473" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539473">(Oct 31 2019 at 15:01)</a>:</h4>
<p>well, first let me say</p>



<a name="179539487"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539487" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539487">(Oct 31 2019 at 15:01)</a>:</h4>
<p>Thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for joining</p>



<a name="179539503"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539503" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539503">(Oct 31 2019 at 15:01)</a>:</h4>
<blockquote>
<blockquote>
<p>anyway unfortunately i have not allocated the appropriate amount of time in this meeting to have this discussion. <span aria-label="sad" class="emoji emoji-2639" role="img" title="sad">:sad:</span></p>
</blockquote>
<p>how/where should we have that conversation?</p>
</blockquote>
<p>lets maybe open a fresh topic?</p>



<a name="179539609"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539609" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539609">(Oct 31 2019 at 15:02)</a>:</h4>
<p>OK.</p>



<a name="179539624"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-10-31%20%2354818/near/179539624" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-10-31.20.2354818.html#179539624">(Oct 31 2019 at 15:02)</a>:</h4>
<p>like here: <a href="#narrow/stream/131828-t-compiler/topic/.C2.BFrevert.3F.20PR.20Pre-expansion.20gate.20most.20of.20the.20things.20.2365742/near/179539595" title="#narrow/stream/131828-t-compiler/topic/.C2.BFrevert.3F.20PR.20Pre-expansion.20gate.20most.20of.20the.20things.20.2365742/near/179539595">https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/.C2.BFrevert.3F.20PR.20Pre-expansion.20gate.20most.20of.20the.20things.20.2365742/near/179539595</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
</html>